Quote:
Originally Posted by UPP
Yes Hammer, I believe that you're moving in the right direction.
Now it's a known fact that on gas ultamately you can make more power with lower compression and higher boost, vs higher compression lower boost before running into the detonation barier. Methanol is the opposite. Due to it's extreem chilling and throught the roof octane, this is possible.
I'm still playing with E85 to get a really good comparison, but so far I'm leaning towards higher compression. In fact I'm doing another engine build right now with 12.5:1. The higher compression gives more power overall, better low end, and spools the turbos quicker, and you can use smaller turbos too.
As far as "what's possible" I don't konw for sure, but I can tell you what I've seen work so far. The DSM guys are taking stock blocks out of the mits expo (2.4L) and slapping their heads on them. The interesting thing is that the compression is ~13:1 (not sure exactly what, this is based off the cranking compression). With this they then turn and run 25+ psi. I have heard rumor of 30psi on one of these setups, but I have yet to confirm this. All of this is done without any meth injection, or fancy parlor tricks. But, these guys really know what they're doing, so big front mounts, and these turbo's are properly sized to run as absolutely efficient as possible.
Obviously our engines are slightly different, and things like heat and combustion chamber design will have an effect, so there is really no way to "know" what's possible until you do it.
I can tell you though these DSM's are really nasty.
UPP
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This is sounding better and better. Now if Ray's stroker 3.5L motor can run 11:1 or 12:1 pistons...
A setup like this would have a lot of low end torq and near zero lag issues.
Add AWD and a 550-600 awhp setup with lots of low end it would bring a whole new level of respect to the 3s on the street. It would be hard to take a 3s on a roll if it was setup like this. Maybe we can even get a tax incentive to build an E85 only use car! LOL!